我有这个问题的代码:
使用 Memory Stream 生成 PDF 文件作为 system.net.mail.attachment
帮助我在内存中创建电子邮件附件。
Imports System.IO
Imports System.Net.Mail
Imports System.Text.ASCIIEncoding
Imports System.net.Mime
Public Sub SendMail(ByVal att As String, Optional ByVal filename As String _
= "Attachment.csv")
Dim sendMail As New SmtpClient
Dim mail As New MailMessage
Using MemoryStream = New MemoryStream
If att.Length <> 0 Then
Dim data As Byte() = ASCII.GetBytes(att)
MemoryStream.Write(data, 0, data.Length)
MemoryStream.Seek(0, SeekOrigin.Begin)
MemoryStream.Position = 0
Dim content As New Net.Mime.ContentType()
content.MediaType = MediaTypeNames.Application.Octet
content.Name = filename
Dim Attach As Attachment
Attach = New Attachment(MemoryStream, content)
mail.Attachments.Add(Attach)
End If
sendMail.DeliveryMethod = SmtpDeliveryMethod.Network
sendMail.Host = "SERVER"
sendMail.UseDefaultCredentials = False
sendMail.Credentials = New System.Net.NetworkCredential("UN", "PW")
sendMail.Send(mail)
End Using
End Sub
我收到此错误:
重载解析失败,因为没有缩小转换就无法调用可访问的“新”:
'Public Sub New(contentStream As System.IO.Stream, contentType As System.Net.Mime.ContentType)':参数匹配参数 'contentStream' 从 'Object' 缩小到 'System.IO.Stream'。
'Public Sub New(fileName As String, contentType As System.Net.Mime.ContentType)':参数匹配参数 'fileName' 从 'Object' 缩小到 'String'。
Dim Attach As Attachment
Attach = New Attachment(MemoryStream, content)
在这条线上。
我怎样才能解决这个问题?